Elon Musk on Saturday shared the very first image of the Boring Company’s underground Los Angeles tunnel that is actively under construction. We’ve known for months now that Musk’s cleverly named tunnel-digging venture has been testing equipment and technology beneath SpaceX’s Hawthorne, California headquarters and elsewhere in the LA suburb, after the city granted the company a test permit back in August. But this is the first image Musk has shared of what looks like a fully built out underground system similar to what the entrepreneur first unveiled earlier this year in a concept video.

The Boring Company was founded as an experimental effort in alternative urban transportation, with Musk envisioning a series of underground roadways…